From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: perf uncore & lkvm woes
Date: Thu, 16 Aug 2012 09:19:45 +0200
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Cc: Sasha Levin <levinsasha928@gmail.com>,
	Asias He <asias.hejun@gmail.com>,
	Cyrill Gorcunov <gorcunov@gmail.com>,
	Ingo Molnar <mingo@elte.hu>, KVM General <kvm@vger.kernel.org>,
	"Yan, Zheng" <zheng.z.yan@linux.intel.com>
To: Pekka Enberg <penberg@kernel.org>
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On Thu, 2012-08-16 at 10:01 +0300, Pekka Enberg wrote:
> Has anyone seen this? It's kvmtool/next with 3.6.0-rc1. Looks like we
> are doing uncore_init() on virtualized CPU which breaks boot. 

I think you're the first.. I don't normally use kvm if I can at all
avoid it.

But I think its a 'simple' matter of kvm not emulating the entire
hardware. Afaik the uncore isn't enumerated and we simply assume MSR
presence based on cpu model.

Added Zheng Yan who wrote most of that stuff.